18361579504425 has 96 divisors (see below), whose sum is σ = 33028673529600. Its totient is φ = 8963245301760.

The previous prime is 18361579504381. The next prime is 18361579504469. The reversal of 18361579504425 is 52440597516381.

It is an interprime number because it is at equal distance from previous prime (18361579504381) and next prime (18361579504469).

It is not a de Polignac number, because 18361579504425 - 2¹⁰ = 18361579503401 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 96094381 + ... + 96285269.

It is an arithmetic number, because the mean of its divisors is an integer number (344048682600).

It is a 1-persistent number, because it is pandigital, but 2⋅18361579504425 = 36723159008850 is not.

Almost surely, 2^{18361579504425} is an apocalyptic number.

18361579504425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18361579504425 is a deficient number, since it is larger than the sum of its proper divisors (14667094025175).

18361579504425 is a wasteful number, since it uses less digits than its factorization.

18361579504425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192995 (or 192990 counting only the distinct ones).

The product of its (nonzero) digits is 36288000, while the sum is 60.

The spelling of 18361579504425 in words is "eighteen trillion, three hundred sixty-one billion, five hundred seventy-nine million, five hundred four thousand, four hundred twenty-five".